Comment 3 for bug 1701463

I have published an experimental fix for the Wayland-specific corruption and performance issues here:

https://launchpad.net/~vanvugt/+archive/ubuntu/videoaccel
gstreamer-vaapi 1.12.2-1ubuntu1vanvugtppa1

BEFORE
Wayland Gnome..totem..... 60% and corrupt (LP: #1701463)
Wayland Gnome..gst-play.. 5% but requires workarounds (LP: #1698287)
Wayland Gnome..cluttergst 52% and corrupt (LP: #1701463) \
Wayland Gnome..glimagesnk 3% and smooth / gst-launch-1.0
Wayland.Weston.totem..... 62% and corrupt (LP: #1701463)
Wayland.Weston.gst-play.. 4% and smooth
Xorg Gnome.....totem..... 12% and jerky (LP: #1698282, LP: #1698270)
Xorg Gnome.....gst-play.. 4% and smooth

AFTER
Wayland Gnome..totem..... 25% and jerky (LP: #1698282, LP: #1698270)
Wayland Gnome..gst-play.. 8% but requires workarounds (LP: #1698287)
Wayland Gnome..cluttergst 5% and smooth \
Wayland Gnome..glimagesnk 5% and smooth / gst-launch-1.0
Wayland.Weston.totem..... 10% and jerky (LP: #1698282, LP: #1698270)
Wayland.Weston.gst-play.. 4% and smooth
Xorg Gnome.....totem..... 13% and jerky (LP: #1698282, LP: #1698270)
Xorg Gnome.....gst-play.. 4% and smooth